Any plant which habitually breaks away from its roots in the autumn, and is driven by the wind, as a light, rolling mass, over the fields and prairies; such as witch grass, wild indigo, Amarantus albus, etc.
A plant, such as Russian thistle, that dries and hardens in the autumn and then breaks away from its roots to be blown about by the wind like a rolling ball. [1887
This must be done while driving in a car with doors. While on the road the driver (male) is receiving head from a woman / man. Once you, the driver, blow your load, you open the passenger door and kick "the blower" out of the car without stopping... making them roll down the road like a tumbleweed. - Jeff K, CA